Many gases ________ in the atmosphere actuall...

Many gases ________ in the atmosphere actually ________ heat energy that escapes from the Earth’s surface back to the earth.

A. finding; reflecting                      B. found; reflected

C. found; to reflect                        D. found; reflect

高三英语单项填空中等难度题查看答案及解析

An increased concentration of carbon dioxide and certain other gases in the Earth’s atmosphere ______ global warming.

A. contributing to　　　　 B. contribute to

C. contributes to　　 　　 D. to contribute to

高三英语单项填空简单题查看答案及解析

Global warming happens when greenhouse gases trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This is like when heat is trapped in a car. On a hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows，but it can’t get back out. This is what the greenhouse effect does to the earth .The heat and light can get through the atmosphere, but it can’t get out As a result，the temperature rises.

Sometimes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriate for people to live on Without it，the earth would be freezing，or it would be burning hot. It would be freezing at night because we would not get the sun’s heat and light .During the day, especially during the summer, it would be burning because the sun would be up with no atmosphere to filter(过滤)it，so people，plants，and animals would be exposed to all the light and heat.

Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the each can get unusually warmer, and many plants，animals．and people will die. Plants would die because they would not be able to take the heat .This would cause us to have less food to eat, and it would also limit the food that animals have. With less food for the animals that we need to survive we would even have less food. Gradually, people，plants，and animals would all die of hunger．

People are doing many things to try to stop global warming .One thing is carpooling—driving with someone to a place that you are both going to. Another thing is being more careful about leaving electrical devices turned on. Now, more people are even riding buses or bikes to lower the amount of greenhouse gases in the air .Although adults do many things to help stop global warming, kids call do just as much.

1.By the example given in Paragraph l, the author wants to__________.

A. explain how global warming happens

B. show his feeling in a car in hot summer

C. tell us cars are causes of greenhouse gases

D. say that I there are greenhouse gases in every car

2.The underlined word ‘it” in Paragraph 2 refers to__________.

A. light　　 B. greenhouse effect　　 C. temperature　 D. heat

3.What is the effect of atmosphere?

A. IT only traps the heat of the sun.

B. It does great harm to humans.

C. It makes the earth neither to hot nor too cold.

D. It prevents all the light from the sun shining on the earth.

4.What is the main idea of the third paragraph?

A. lf there is greenhouse effect．all the plants will die

B. Human beings are likely to disappear from the earth

C. Crops can ′t take in the heat lf there is greenhouse effect

D. Although greenhouse effect is necessary．Too much of it will cause us to die.

5.What will the author most probably discuss in the paragraph that follows?

A. What kids can do to help stop global warming.

B. Who should be responsible for the environmental problems.

C. What global warming is doing to the environment.

D. Why cars and buses pollute the air a lot

高三英语阅读理解中等难度题查看答案及解析

Global warming is when the earth heats up，the temperature rises.It happens when greenhouse gases—carbon dioxide，water vapor，nitrous oxide(二氧化氮)，and methane(沼气) trap heat and light from the sun in the earth’s atmosphere，which increases the temperature.This is like when heat is trapped in a car.On a very hot day，the car gets hotter when it is out in the parking lot.This is because the heat and light from the sun can get into the car，by going through the windows，but it can’t get back out.Once the light is inside the car，it is trapped and the heat builds up，just like it does in the earth’s atmosphere.This is what the greenhouse effect does to the earth.The heat and light can get through the atmosphere，but it can’t get out.As a result，the temperature rises.

Sometimes the temperature can change in a way that helps us.The greenhouse effect makes the earth appropriate for people to live on.Without it，the earth would be freezing，or on the other hand it would be burning hot.We would not get the sun’s heat and light to make the night somewhat warm.During the day，especially during the summer，it would be burning because the sun would be up with no atmosphere to filter(过滤) it，so people，plants，and animals would be exposed to all the light and heat.

Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the earth can get unusually warmer，and many plants，animals，and people will die.They would die because there would be less food (plants like corn，wheat，and other vegetables and fruits)．This would happen because the plants would not be able to take in the heat.This would cause us to have less food to eat，but it would also limit the food that animals have.Gradually，people，plants，and animals would all die of hunger.

People are doing many things to try to stop global warming.One thing people are doing is carpooling.Carpooling is driving with someone to a place that you are both going to.This minimizes the amount of greenhouse gases put into the air by a car.

Another thing that people are doing is being more careful about leaving things turned on like the television，computer，and the lights.A lot of people are taking time away from the television，and instead，they are spending more time outdoors.This helps our planet out a lot.Now，more people are even riding buses，walking to school，and riding their bikes to lower the amount of greenhouse gases in the air.

Planting trees and recycling also help.If you recycle，less trash goes to the dump，and less trash gets burned.As a result，there are fewer greenhouse gases in our atmosphere.Although adults do many things to help stop global warming，kids can do just as much.

1.By the example given in Paragraph 1，the author wants to ________.

A．explain how greenhouse gases work

B．show his feeling in a car in hot summer

C．tell us cars are causes of greenhouse gases

D．say that there are greenhouse gases in every car

2.The underlined word “it” in Paragraph 2 refers to “________”．

A．light　                                 B．heat

C．temperature　                             D．greenhouse effect

3.What is the main idea of Paragraph 3?

A．If there is greenhouse effect，all the plants will die.

B．Human beings are likely to disappear from the earth.

C．Crops can’t take the heat if there is greenhouse effect.

D．Although greenhouse effect is necessary，too much of it causes us to die.

4.What will the author most probably discuss in the paragraph that follows?

A．Why cars and buses pollute the air a lot.

B．What kids can do to help stop global warming.

C．What global warming is doing to the environment.

D．Who should be responsible for the environmental problems.

高三英语阅读理解中等难度题查看答案及解析

The way we cook is important. In many countries, the two sources of heat used for cooking are natural gas and electric stoves. The World Health Organization(WHO) warns that millions of people are dying every year from indoor air pollution. The WHO finds that poor cooking, heating and lighting technologies are killing millions of people each year.

Indoor air pollution results from the use of dangerous fuels and cook stoves in the home. WHO officials say nearly three billion people are unable to use clean fuels and technologies for cooking, heating and lighting. And they say more than seven million people die from exposure to indoor or outdoor air pollution each year. Of that number, the WHO says about 4.3 million people die from household air pollution given off by simple biomass(生物燃料） and coal stoves.

These findings show that the home use of poisonous fuels is to blame for many of these deaths. These fuels include wood, coal, animal waste and so on. Carlos Dora is Coordinator in the WHO’s Department of Public Health, Environmental and Social Determinants of Health. He says people should not use unprocessed coal and kerosene(煤油） fuel indoors. He says opening a window or door to let out the harmful air will not correct the situation. It will only pollute the outdoors. “New technologies and clean fuels can rid people of this problem.”

The United Nations found that more than 95 percent of families in sub-Saharan Africa depend on solid fuels for cooking. It says huge populations in India, China and Latin American countries, such as Guatemala and Peru, are also at risk.

Nigel Bruce is a professor of Public Health at the University of Liverpool. He says researchers are developing good stoves and other equipment to burn fuels in a more efficient way. “There are already many technologies for clean fuels available now. An effective and reasonably low-cost ethanol(酒精） stove that is made by Dometic is now being tested out. Another interesting development is electric induction stoves.” In India, you can buy an induction stove for about $8. And in Africa you can buy a solar lamp for less than $1.

1.How is Paragraph 2 mainly developed?

A. By making classifications.

B. By listing numbers.

C. By following time order.

D. By describing a process.

2.According to Carlos Dora, what is the best solution to indoor air pollution?

A. People should use an effective air cleaner.

B. People should open a window or door to let out the harmful air.

C. People should use new technologies and clean fuels.

D. People should prevent themselves from being exposed to harmful air.

3.What can we learn from the passage?

A. Most of the deaths from indoor pollution are in developing countries.

B. Burning solid fuels can help limit indoor air pollution.

C. People now can buy ethanol stoves made by Dometic in India.

D. There are already two technologies for clean fuels available for use.

4.Which would be the best title for the passage?

A. The way we cook is changing

B. Types of indoor air pollution

C. The development of electric stoves

D. Indoor air pollution kills millions each year

高三英语阅读理解中等难度题查看答案及解析

　　he is not perfect in many aspects, I do actually quite like the man.

A. As                        B. If

C. While                    D. Unless

高三英语单项填空中等难度题查看答案及解析

To reduce emissions of greenhouse gases, many countries are increasing the use of natural gas, wind and other forms of _______ energy.

A. abandoned　　　　　　　　　 　　 　　　　　　　　　 B. original　　 　　　　　　　　　 　　 C. alternative　　　　　　　　　 　　　　　 　　　　　　　　　 D. precious

高三英语单项填空中等难度题查看答案及解析

Thanks for bringing so many beautiful balloons, which____the festival atmosphere.

A. led to.　　 B. added to.　　 C. appealed to.　　 D. turned to.

高三英语单项填空中等难度题查看答案及解析

Fire can help people in many ways.  Fire can heat water, (21)____ your house, give light and cook food. But fire can burn things too. Nobody knows (22)____ people began to use fire. One story from Australia tells about a man a very long time ago. He (23)____ the sun by a rope and brought fire down.

Today people know how to (24)____ a fire with matches. Children sometimes like to play with them. But matches can be very (25)____.

Fire kills people every year. So you must be careful (26)____ matches. You should also learn to (27)____ fires. Fires need oxygen（氧气）. Without oxygen they die. There is (28)____ in the air. Cover a fire with water, sand, or (29)____, with your coat or a blanket. This keeps the air from a fire and kills it.

Be careful with fire, and it will help you. Be careless with fire, and it might (30)____ you.

高三英语完型填空中等难度题查看答案及解析

I have so many clients who believe that cutting their hair helps it grow. Actually, for every few inches you’re cutting, you ______ months to the growing time.

A.have added B.will have added C.add D.are adding

高三英语单项填空中等难度题查看答案及解析